Patents by Inventor Valérie Visciglio

Valérie Visciglio has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for treating exhaust gas of internal combustion engines functioning with sulphur-containing fuel
    Patent number: 6355220
    Abstract: The present invention relates to a process for the treatment of exhaust gases from internal combustion engines operating with a fuel containing sulphur. This process is characterized in that use is made, as catalyst, of a composition based on a cerium oxide and on a zirconium oxide, in a cerium/zirconium atomic proportion of at least 1, and on at least one oxide chosen from yttrium, lanthanum and praseodymium oxide and which exhibits a specific surface, after calcination for 6 hours at 900 ° C., of at least 35 m2/g.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: March 12, 2002
    Assignee: Rhodial Chimie
    Inventors: Gilbert Blanchard, Valérie Visciglio
  • Catalytic composition comprising a mixture of cerium oxide with manganese, iron or praseodymium oxide, process for its preparation and its use in automobile afterburning catalysis
    Patent number: 5976476
    Abstract: The invention provides a catalytic composition which is based on a cerium oxide and on at least one other oxide chosen from iron, manganese and praseodymium oxides, which controls H.sub.2 S emissions in the catalysis of treatment of automobile exhaust gas.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: November 2, 1999
    Assignee: Rhodia Chimie
    Inventors: Gilbert Blanchard, Eric Quemere, Olivier Touret, Valerie Visciglio